graphics/opendx and dropping science/hdf
tomek at flash.uchicago.edu
Thu Apr 8 09:43:10 PDT 2004
If there would be some effort in developing data interface between
HDF5 and OpenDX, FLASH folks might be interested in that. We have HDF5
for parallel I/O and having support for data exchange with OpenDX
would make that free graphics package available to our users.
Thu, 11:43 CDT (16:43 GMT), Apr-08-2004
Tomasz Plewa www: flash.uchicago.edu
Computational Physics and Validation Group email: tomek at uchicago.edu
The ASCI Flash Center, The University of Chicago phone: 773.834.3227
5640 South Ellis, RI 475, Chicago, IL 60637 fax: 773.834.3230
On Thu, Apr 08, 2004 at 10:35:14AM -0500, Mike Folk wrote:
> (Thanks for cc'ing me Quincey.)
> Just a couple other comments about open dx:
> The CACTUS project has been using open dx with hdf5 for several years. I
> strongly suspect there are others, but don't know specifics. As far as I
> know, the CACTUS folks haven't documented their work (I asked them a few
> times, but that was a couple of years ago), so I don't know exactly how
> they organize the data.
> Open dx and hdf5 are a natural combination, and it's a pity we haven't
> married them in some formal way, and we'd love to work with you if you move
> in that direction.
> At 09:27 AM 4/8/2004, Quincey Koziol wrote:
> >Hi Mikhail,
> > > I intend to drop the science/hdf port. It was obsoleted by hdf5 long ago
> > > (was it?), it breaks on some some 64bit platforms, it conflicts with
> > > math/netcdf.
> > >
> > > All the technical issues are, probably, fixable, but the obsoleteness
> > > makes them not worth the effort. Or so it seems.
> > >
> > > The only port relying on science/hdf is graphics/opendx and only if
> > > WITH_HDF is defined. Unfortunately, opendx does not (yet?) support hdf5.
> > >
> > > So...
> > > . Does hdf5 really obsolete hdf4?
> > No, they are different file formats & libraries, etc.
> > > . Does hdf support add much value to opendx at all,
> > > or can we just remove it?
> > I don't know.
> > > . If not, should I (or some other helping hand) try to patch
> > > opendx to use hdf5?
> > It would certainly be nice if opendx supported hdf5.
> > > or
> > > . bring the old hdf4 into the 21st century (fixing the types,
> > > depending on math/netcdf instead of building its own)?
> > It shouldn't be _too_ hard to fix the type information in hdf4 (I can
> > help
> >you with that, if you'd like), but it would be _very_ hard to depend on
> >math/netcdf instead of its own.
> > Quincey
> > >
> > > Thanks for any ideas,
> > >
> > > -mi
> > >
> Mike Folk, Scientific Data Tech (HDF) http://hdf.ncsa.uiuc.edu
> NCSA/U of Illinois at Urbana-Champaign 217-244-0647 voice
> 605 E. Springfield Ave., Champaign IL 61820 217-244-1987 fax
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